[Zurück]

S. Kaasalainen, H. Hyyppä, A. Kukko, P. Litkey, E. Ahokas, J. Hyyppä, H. Lehner, A. Jaakkola, J. Suomalainen, A. Akujärvi, M. Kaasalainen, U. Pyysalo:
"Radiometric Calibration of LIDAR Intensity With Commercially Available Reference Targets";
IEEE Transactions on Geoscience and Remote Sensing, 47 (2009), 2; S. 588 - 598.

We present a new approach for radiometric calibration
of light detection and ranging (LIDAR) intensity data and
demonstrate an application of this method to natural targets. The
method is based on 1) using commercially available sand and
gravel as reference targets and 2) the calibration of these reference
targets in the laboratory conditions to know their backscatter
properties. We have investigated the target properties crucial for
accurate and consistent reflectance calibration and present a set
of ideal targets easily available for calibration purposes. The first
results from LIDAR-based brightness measurement of grass and
sand show that the gravel-based calibration approach works in
practice, is cost effective, and produces statistically meaningful
results: Comparison of results from two separate airborne laser
scanning campaigns shows that the relative calibration produces
repeatable reflectance values.

Terms-Calibration, laser measurements, laser radar, laser radiation effects, remote sensing.

http://dx.doi.org/10.1109/TGRS.2008.2003351